Spy shot Chevrolet Camaro cabrio

There have been droptop Camaros at GM Holden's proving ground at Lang Lang for well over 18 months but now, with a firm timetable for production and sales, the car is getting serious mileage in the USA.

This convertible Camaro prototype is caught by Carparazzi close to GM's worldwide development headquarters, the Milford proving ground outside Detroit, during on-road testing.

It's a V8-powered SS model, just like the coupes which are becoming a sellout success across America.  The plan for the convertible Camaro has production beginning at GM's Oshawa factory in Canada in the first quarter of 2011, according to a one-line confirmation in the press pack for the 2011 Buick Regal.

Carparazzi says the actual start-up will be February, 2011 and that points to sales of the Camaro convertible as a 2012 model later in the year.  And perhaps an on-sale date that coincides with the Camaro coupe in Australia ...