I'd like to recommend we avoid tunnels through mountains in future cycles of WT in favor of paving roads over mountains and high areas. Despite tunnels being a massive amount of needless, extra work and generally being unsightly, they increase the odds of vehicles getting stuck. Just twice this week my truck ended up in the trees above a tunnel due to lag.
I'm not suggesting we get rid of tunnels entirely and, if we can build tunnels where the terrain above is fairly manageable for a vehicle, the problem is mitigated. However, dominating the terrain and building major highways through mountains just to maintain a level height for the road is both expensive and problematic for vehicles. I say we introduce a road building rule in future WT cycles where, if the natural terrain extends above 80, we require the road to follow the terrain elevation.