I wish I had time for a 30 mile bike ride.  You know how long it takes me to ride my bike to work 11 miles?  40 minutes.  Know how long it takes to drive?  An hour.  I hate people with the excuse that "[they're] too busy!"  Spend the $125.00 on a cheap bike and get the fuck out there.  Or buy a used one for $25.00.  Or get one for free at a police auction.  Oh wait, then you wouldn't have an excuse anymore, sorry.