Well, you have to hand it to the strategy team over at Zipcar . Arguably the largest on-demand car-sharing network, Zipcar went public last year and not long after saw its market cap cross $1 billion . It’s since fallen back, and with collaborative consumption and the market for car-sharing heating up, the big players have to make moves. Zipcar has since forged a partnership with Ford, making it the largest provider of cars for Zipcar’s University program , and, in December, the company took a controlling stake in Spain’s largest car-sharing network, Avancar . Today finds Zipcar making another strategic move to get its mitts in fellow car-sharing companies, again with a focus on universities, whose students are among the most eager adopters of car-sharing models. What do I mean? The company today announced that it is a lead investor in the $13.7 million series A financing of Wheelz , a junior, university-focused version of itself. The Detroit-based Fontinalis…