As long as enchanted permanent is a creature, it gets +1/+1 for each creature and/or Vehicle you control.
Channel —
![2](/Handlers/Image.ashx?size=small&name=2&type=symbol)
![White](/Handlers/Image.ashx?size=small&name=W&type=symbol)
, Discard Born to Drive: Create two 1/1 colorless Pilot creature tokens with "This creature crews Vehicles as though its power were 2 greater."