I've done drives in the DC area, where I live, just to observed the construction at the Springfield Interchange (I-95/395/495/The Beltway) and the Woodrow Wilson Bridge replacement project. Just this past Sunday, I drove to Pennsylvania just to drive Interstate 99.
My test results:
Joe Normal: 21% Nerd, 17% Geek, 47% Dork.
Thank G*d I'm not completely normal, or else I'd probably be a jerk.
Pure Nerd: 56 % Nerd, 26% Geek, 47% Dork.