For electrical, make sure there is a ceiling outlet for the garage door opener. For low outlets, make sure you have several for battery tenders for the bikes.
I also ran coax, cat-5 (wireless router in the house is iffy in our detached garage), and high outlets for a tv/cable box/surround system. By keeping it all up high on a shelf above the TV wall mount it saves floor space from not needing a cabinet to set it all on.