Should we have a World Cup in Motorsports?

With the Football World Cup soon coming to a close, I thought this would perhaps be a relevant question to ask. I have always thought it a shame that the A1GP never really reached its full potential, and sometimes I do think more people would be interested in a sport that they could relate to more, and a World Cup in Motorsports would be a perfect solution to this.

Think about it - how many people do you know who gain a sudden interest in football come the World Cup? Why shouldn't the same happen for motorsports - all it needs is a bit of time. If it hadn't been for the financial crisis, I reckon the A1GP had the potential to really compete with F1, the WTCC and the like. Perhaps its what the sport needs most of all.