Sao Paulo's mayor says the city government is responsible for public safety and believes the Formula 1 Brazilian Grand Prix venue's sale will improve security after a spate of attacks.
They managed to escape uninjured, but it came after promises of a heightened police presence around the venue.
During the event, Williams and Sauber personnel were also subject to attacks, while officials from the FIA were also approached by armed robbers before escaping unharmed.
"Security is the responsibility of the Public Security Secretariat, but it is also the responsibility of the city of Sao Paulo," said mayor Joao Doria, who was speaking before the attack on the Pirelli car.
"When I heard it [the Mercedes case], I spoke to the security secretary to have a police reinforcement in the area around the race track.
"I also determined the reinforcement of agents of the Metropolitan Civil Guard.
"It's sad, it's unfortunate, fortunately anybody wasn't hurt. What we need is to learn a lesson from this for upcoming events."
The city of Sao Paulo is in discussions with three parties interested in purchasing the Interlagos circuit.
Pressure on public funds, amid an uncertain economic climate in Brazil, has led to a proposal to raise cash through the privatisation of real estate, including the circuit, owned by the city.
Doria said privatising the circuit would lead to enhanced security in and around the venue.
"Remember that the privatisation of the racetrack will contribute to this [public safety]," he said.
"So we will have security systems not only in the internal area, but also in the external area of the racetrack."
Doria added that Sao Paulo is pushing on with plans to sell the circuit and expects the sale to be completed in the "first half of next year".
"We have a lot of groups that showed interest to buy," he said.
"We can't reveal who are these groups, but we are very confident that national and international groups will be competing for the track.
"The racetrack will not stop being a racetrack.
"They will, obviously, make investments, as well as complementing works that are necessary for the comfort of the spectators, complementing the works already done here by the city of Sao Paulo, with the support of the national government."
Interlagos has a deal to host F1 until 2020 and Doria hopes the new owners can "renew for another decade".