Well the first thing is that it's really slow, however, this is realistic. Thus, some solutions to "speed" things up realistically:
1) Giganta Glider

c47 tows glider, glider contains 1 or 2 tanks
2) Trains - either AI or "human" controlled.. trains go at around 40-60mph all the time and stop off periodically at certain spots (say close to fields). You just drive your tank onboard, and wait until you get to the destination at least half the time! For fun, you can also gun for your tank while on the train to try and prevent any nasty plane types from ruining your trip.
3) Roads - smooth
3.1) Tunnels - need to bypass that big hill? no problem, just go through it

3.2) Bridges - big canyon = big bridge
The last thing, I've noticed that vehicle bases are far away from the front? Wouldn't it be best to have all the vehicle bases at or near the front? Also, enemy bases closer together as well so you get more land combat?
The games great, the tanks are a blast (literally)
