Petrolheads are fast becoming pariahs as society becomes ever greener; you could be forgiven for thinking that the internal combustion engine will soon be legislated off the planet, leaving us all humming about in dolphin-friendly, battery-powered bubble cars with all the excitement of an afternoon at the local rest home
And this is understandable. After all, oil is running out, the planet is heating up and something's got to give. But what if you could save the planet and keep the performance?
Well, you can, because with a little judicious tweaking, it turns out that bio-ethanol can make a car go like absolute stink.
The car in question is Fiona Leggate's stripped-out MG ZR British Touring Car championship racer. It weighs 1200kg and packs 225kW.
Fire it up and the clattering, banging din is immense. The garage shakes, small children fall over and the sweet smell of race fuel fills the air.
But this is no ordinary race fuel; this vicious firebreather runs on E85 bio-ethanol and although bio-ethanol use has been gaining momentum for years it's still unusual in motorsport.
The team's chief mechanic, Mark Atkinson, yells at me from under the bonnet as he warms up the car: "We gained five brake horsepower just by switching to bio-fuel.
"The inlet manifold sludges up because of the fuel so we have to clean it regularly but other than that we've had no problems."
At this point Leggate wanders in. She's petite and easygoing but there's a tough, determined streak in there, too.
She says: "Racing's my dream and I've come a long way in a short time - five years ago was my first time on a circuit. The next time I saw a track I was racing on it.
"This year was my first full year in the BTCC but it's been the worst season possible. I've been taken out three times and had some huge crashes, but I know I can do this.
"This isn't about making a point because I'm a girl, I'm doing this for myself."
I shoehorn myself into the passenger seat for some flat-out laps with her. Negotiating a baffling array of switches and levers where the centre console once was, she fires the car up and we head on to the track.
She's not hanging about. Foot on the floor, she hammers through the sequential box as we head indecently fast into the tricky left/right that is Maggots curve and Becketts corner.
Drifting hard out of Becketts
My mind's yelling "brake!" as Fiona takes another gear but, just as I'm absolutely, positively certain that we're heading for the hay bales, she slams on the anchors, somehow death is averted and instead we're drifting hard out of Becketts in a cacophany of squealing tyres, bucking chassis and screaming revs.
My thoughts on the rest of the session are pretty jumbled, although I distinctly remember laughing my socks off - what this car is capable of is ridiculous and quite possibly outside the realms of physics.
The grip generated by the chassis for the slick tyres is immense, the brakes, when used in anger, are much like running into a wall, and the motor howls like a banshee.
Before I had time to make sense of it all we were back in the pits and it was time for me to take the driving seat.
Folded around the steering column
Just fitting in was a struggle. Thanks to everything being set up for Fiona, my 1.9m frame ended up folded around the steering column with the wheel in my chest and the pedals somewhere around my knees.
Breathing was tricky enough, let alone driving, but minutes later I was kangarooing down the pits lane as the MG's engine made its displeasure at being forced to travel so slowly very apparent.
Not only had I not been round Silverstone in years but I'd also never sampled the delights of a sequential gearbox, so I had to remind myself not to use the clutch other than for pulling away unless I wanted to burn it out, as well as the added fear of wrecking the transmission.
These gearboxes demand firm changes. Get one wrong and you'll terminally damage a gear. At £500 (about R6900) apiece I really didn't want to do that.
Getting it right
I'd like to say that all this was justification for my pathetically slow pace, but it wasn't. I was just useless. But once, just once, heading out of Woodcote and on to the start/finish straight, I got it right and the car gave me a glimpse of what it was really like.
It wasn't much but, in that fleeting moment, I knew two things: first, I will never be a racing driver and second that if bio-ethanol can make a car shift like this, I can't wait to see a lot more of it. - The Independent, London