More money than cents?

Thinking about buying a car. Only because it looks like we'll have a sizeable tax return after all, not the measly amount we'd figured on. I was originally thinking of buying a motorbike, but figured a car would be better family-wise... and if we could get it at around the same price as a new bike then why not.
Not sure thou cuz its a big comitment weekly... dunno if its worth it too. Car owners are fairly lazy too... would it be harder going back to pedestrian-ism if we got lazy about driving everywhere?
I guess its something to think about anyway.
WDYT?