[jyl]

Depends on if gasoline is readily available. If not, and you need to escape the urban area and get far away, might just hijack the highest-MPG car you see. My Prius, with my two 5-gallon cans (that I keep full), should get me 1,000 miles away. But if the zombies force me to fight my way out, I'll wish I was in that bank armoured car. Another obvious option is something 4x4 so you can detour around obstructed parts of the freeways. So maybe the compromise between MPG and 4x4 is to hijack a Subaru Forester, if the owner doesn't kick your @$$.