I am a BIG fan and proponent of lifestyle cardio.
This basically means instead of driving to the gym, walk or bike.
Doing your weekly shopping? Going downtown for fun shopping? Walk or ride your bike.
Right now I am riding my bike to work, about 13-14 miles either way.
By train = 45-50 min (walk up hill to hospital included)
Driving = 40 min
Cycling 60-80 min + 500 kcals + money saved on train fare/petrol
It also doesn't seem like cardio, it is just my transportation now.