Re: Sharing vs. more toys
I don't think your decision on how to handle this at one point is going to make or break how they view sharing/playing together. I would try to teach taking turns, and when they fought I would put it in time out for a few minutes. However, if they both love the car piece and could both play with it for an extended period of time, I'd probably get another one.
~starting to receive squares and just want to say THANK YOU~ to all you awesome mamas!~