Mostly because tanks aren't optimized for getting normal people from A to B as quickly and efficiently as possible, so we don't build infra for that. Also becau

Mostly because tanks aren't optimized for getting normal people from A to B as quickly and efficiently as possible, so we don't build infra for that. Also because approximately zero people have tanks for the aforementioned reasons. That being said, tanks aren't actually that big, so usually you can drive a tank on the road. Main problem is you need to stick to low speed roads because they don't go very fast.