I think I could get over the speed limit on the 30th avenue hill in Eugene, which goes from rural 55 mph to urban 30 mph (or so???), but I'd rather be safe, and there is a busy traffic light at the bottom of the hill. There are probably a few other hills I could pop the speed up on, but wouldn't be comfortable hitting 45 or so in a residential neighborhood.

I think Main Street Springfield which is flat has a posted speed limit of 20 MPH, but the lights are timed at about 25 MPH, so all the traffic goes above the speed limit, and I'm going flat out just to keep up with the lights and traffic (if all the timers are working right, they seem to not be as regular now as they were decades ago).