What parks? I haven't found any good ones, and Huntley Meadows isn't really drivable.
I just remembered a pretty sweet road.
It's called "The Parkway" in Alexandria, VA, the grovetown area. It's really residential but hilly. There's also a fun little quasi-twisty and hilly road called Memorial St. and Gentele Ct. The end of Gentele by The Parkway is really hilly, and there are two speed humps. One is alright, and another is at 38.778024,-77.094869 which is really terrible and is a killer.
If you follow The Parkway across Kings Highway it leads into a little residential area with one exit, and it's alright and hilly, but nothing special.
Those are pretty much the only interesting places I can think of at this moment. It's not really worth it cause they're out of the way, but I just can't think of more.
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Scott@Hightech
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Looks like fun, but where exactly is that lol? Sucks when my 4r is pretty much stock.