The fastest way for me to drive from my home to downtown Austin is on a road called 2222. Google Maps gives you a decent idea but it's hard to discern elevation. The road winds around the mountains right next to the Colorado River. The recommended speed limit is 45 mph but I average about 70 the entire way, nearly 100 on the straightaways and 60 on the turns. It is quite dangerous. When I didn't live near 2222 I would go joy-riding there a few times a month. If the possibility of an accident is say, 1%, then a few times a month is not too dangerous. But now that I live there and drive 2222 at least once a day the likelihood of an accident has climbed dramatically. I drive an automatic 4-cylinder 2002 Accord and regularly beat 911s there, but I think it's more that they're scared to race than me having a better car.