Most of my characters are unable to drive for one reason or another, but as for the ones who do:

Blueberry: He's actually a fan of mopeds! He owns one that's a little old, but he keeps it in good shape and it's what he typically uses to get around. If he had a choice of any kind he'd probably go for a nice refurbished vintage Vespa of some kind?
Francis: He'd love to drive around in a shiny new Camaro, if he could ever afford one...