For the June VHF QSO Party I drove to the top of Mount Diablo (CM97). I worked quite a few stations from the summit, as well as different locations on the upper road, using the standard setup in the mobile (Yaesu FT-857D + ATAS-120A for 6m, HO-Loop for 2m, and 5/8 wave vertical for 70cm).
During the evening hours on Saturday, I worked QRP portable from the same location at my campsite, and then worked mobile the next day. The QRP rig was the Yaesu FT-817 with a HO-Loop for 2m and a Norcal Doublet + Electraft T1 for 6m. Fun!