I can see Mac getting an old Corsica from the late 80's/early 90's... My dad had one of those until recently. I don't think Mac would care much about WHAT he was driving as long as it ran.
Bloo would probably be all over him, trying to get him to get a convertible or something of the sort.
Bloo on a Harley... Ha... I think he'd still be hankering after that race car bed (I know one he can have... it's in my garage because my little bro's too old for it)...
Y'know, I think he'd try to somehow make it so he could drive the race car bed!!!
I'm insane, and proud of it.
-Marty