i c u using nice bats.
keep it up!
is spirin going to remain as a I$ and R$ only city?
i thought it may be easier for the sims in your city to drive if the roads are er.. lets say less bumpy.
consider doing a search on the STEX to get the tunnel and slope mod to 'smoothen' out the terrain under the roads
also how about building ur city according to the terrain?