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The folks over at Red Alert Regeneration have come up with some new models after a spurt of inactivity. They've got the Soviet and Allied mine layers, and the Soviet Tesla Tank.
If these are true to the game, the Tesla Tank should be weakly armored, relatively fast, and able to kill infantry very quickly, and do a decent amount to vehicles. The Soviet Mine Layer lays anti-personnel mines which can be exploded by Vehicles for little or no damage, but will kill infantry instantly. The Allied Mine Layer has anti-vehicle mines which will damage vehicles. (wouldn't have guessed that!)
Either way you like your mines I guess... Check out their site
for maybe some more info.