Fisher-Price Power Wheels switches prevent children from accidentally leaving the vehicles on for extended periods. They are an excellent sales point for Gramps’ Garage in Maynard, Mass. A key element of this product, Owner Alice Pillvant noted, is that customers need to come to Gramps’ Garage if they want switches because the switches “often have to be installed” and ― at least locally ― Gramps’ Garage is the place to go for Power Wheels installation.