Hey, you know suburban/rural Pennsylvania ... are there any hilly roads, with dropoffs?
Plotergizing ...
Any? How 'bout "lots and lots". Try Route 40 through the central-to-west part of the state, it's very hilly. And anywhere in the Pittsburgh area is hilly, though not too cliffy. Wouldn't be fun to drive off but you wouldn't drop more 'n fifteen feet. Heck, there's a spot or two a mile down from my folks' house that wouldn't be fun to go off in winter. Two roads going steeply downhill, that cross in an "X" shape; the right-hand road is a real killer.
Yay for plotting! I have the characters, the important ones anyway, and the tension; the relationships, and a vague plot. Ack. It'll be great fun. I love this heroine, she's terribly obnoxious and competent.