I just called progressive, They can't not insure a custom electric vehicle you need to go to a independent underwriter. The option on the site about '0' cc for electric vehicles is for when you choose a company that make a DOT approved electric vehicle that they have on there lists of vehicles with specs that they can use to calculate a rate to insure the vehicle. I was very dissappointed when I called and was turned away. I tried as a 1984 Kawasaki GPZ electric motorcycle a 2008 Homemade/kit vehicle electric and a 2008 speed limited electric moped and none where insurable by them.