Sao Paulo - Interlagos served up a tense and lively thriller on Sunday but the long-term future of the Brazilian Formula One Grand Prix remains uncertain.
The existing contract expires in 2020 and negotiations, difficult in the past due to demands for costly improvements of the atmospheric Sao Paulo circuit, may not prove to be straightforward.
The local government has said it intends to privatise the facility as part of plans to reduce public expenditures for the city.
Sao Paulo mayor Bruno Covas attended Sunday's race and told reporters the city planned to push ahead with privatisation and secure the race's future.
A bill for that purpose needs to be approved in a second round vote in the local assembly, with no date set.