"The cities will collapse," predicts Raúl Alcoba, a drivers' leader.
Taxi drivers' leader Eleazar Romero told the rally: "We are not against technology.
That may be premature.A swift election may favour Mr Maduro, a former bus drivers' leader who has been the de facto president since December.
Grosjean, losing control, crashed into the rear of the Sauber driven by Sergio Pérez, sending the Lotus airborne over the helmet of Fernando Alonso, the Ferrari driver and leader in the driver's championship, before it landed on the nose of Alonso's car.
(ESPN) Here are other motorsports results from the weekend: Sebastian Vettel dominated the Suzuka circuit on Sunday, winning the Japanese Grand Prix and closing to within four points of Fernando Alonso, the Ferrari driver and leader in the 2012 Formula One drivers' championship.
Soon after, as Capital New York reported, the drivers' union leader, Bhairavi Desai, issued a statement noting that the drivers had in fact greatly appreciated working with Mr. Yassky.
The drivers' championship leader, Jenson Button of Brawn GP, was eighth.
Reigning champion Ekstrom, who is out of the running this year, finished ahead of British racer Paul di Resta, who is now within two points of drivers' title leader Timo Scheider.
To mark the occasion at Hockenheim, drivers' championship leader Rosberg and his Mercedes team designed a special helmet emblazoned with the colours of the German flag, an image of the trophy and four stars for each of his country's World Cup wins.
Drivers' championship leader Lewis Hamilton will be given a new contract at the end of the year to keep him at Mercedes beyond 2015.
