Prior to selling any product ELV Motors fleet certifies each bike and scooter. The Veken products were deemed unsafe and poorly designed so we decided not to carry them. The 500w motor did not have enough power to go over the side walk in our driveway, the engine would not work consistently, the batteries would not get more than 5 miles before dying, the gas tank is so poorly placed that you are forced to overspill gas into the storage compartment, the key will probably break in under a year and more. The Veken company admits that there are problems but refuses to take them back. They suggest we sell them to the public despite the problems we have had.