I was wondering what people would think about having a teams with different liveries. For example McLaren could run a Johnnie Walker Black Label and Green Label car or a Coca Cola and 7-up. This would give the company the chance to maximise the exposure for their products.
It would also be possible to have two cars from the same team sponsored by different companies. Potentially lower the cost of sponsorship as the advert may not appear on both cars. This could have the advantage of attracting companies that believe F1 is too expensive at the moment for their product.
I think BAR tried to do this some time ago with 555 & Mild Seven, but it was not allowed for some reason (I think there is a FIA regulation against it). But when people are saying it is hard to attract sponsors, maybe the regulations should be readdressed??