I bike to work occasionally: 20 miles each way; 1:10 in, 1:20 home on a good day, 5 minutes more if I'm dragging (or there's a bad headwind off the Potomac). It's about 45 minutes in and home during rush hour by car. No empeg in either my car or my bike. It stays at home, and I listen at work via VPN.

I love to bike, but our nanny gets cranky if I'm more than a little late (she has a 16 year old at home herself) so I can only do it 1 day a week. Sigh.

-jk