1. If there is space on the road for two cars, yes
2. If there is space to move yes, otherwise no
Treat the bump as if you are still driving. I'm not 100% on this, but the rules don't say you jump over cars, so I don't think you can.
1 and 2 it's the same for me.
3: for me no...you don't have a "supercar" ehehe