Though - the banana-bots would get rid of the biggest problem in the equation: highway laws. Not sure that it'd be that hard technically, but almost certainly more expensive. Even at $50K a bot (that's probably way low) it'd need to be 20x more efficient to even breakeven with cheap labor...
Given that all bananas are sterile clones and banana trees can walk, perhaps they would be suitable for risk free genetic engineering so they got themselves to market without any machinery at all.
