I actually really love the concept! Quite fun! I'm pretty sure the speed controls is a key reason I kept playing for so long, not having to wait as much. It was fun to try different strategies on the three different lanes, letting the AI build up one lane, only to send a bunch of the fast ones to the less-defended lane. I could see myself playing a fully fleshed out version for an hour -- I think the AI player's intelligence is really what makes it - it really plays like a normal player would. Nice work!