My new daily driver is a 1.6L NA Doka (thanks, Jeff).  I drive it
mostly in town, but that involves jaunts up and down the local
freeways.  Top speed is 100kph (62mph).  It doesn't zoom, but I only
rarely feel that I'm holding up traffic.  I stay to the right most of
the time.  I get about 30mpg in town; 27 on the road, where I zing ;-)
along at the above-mentioned 62mph.

When hauling a ton and a half of gravel, the engine isn't the limiting
factor on speed (cajones too small, I guess).

If you don't mind staying in the slow lane, a diesel Westy might be
right for you.  None of the Westies are fast, but the diesel adds a
whole new dimension to slow.

My view, and I'm sticking to it!

Karl Wolz