VIDEO: Another Great Tahoe Shuttle - Donner Lake Rim Trail
You can't beat the Donner Lake Rim Trail for a convenient shuttle. There are several options to shuttle, but I think the the Glacier/Teton/Armstrong section has the best views.
VIDEO: My Favorite Tahoe Shuttle - Tyrolian Downhill
You cannot beat Tyrolian Downhill outside of Incline Village, Nevada for a shuttle ride with great features and amazing views. Definitely in my top 5!
