the donor car will need to be retained once it is converted. Once the car has been converted, it will need to be assessed by a vehicle safety engineer before it can be used on the road. In some countries, the user can choose to buy a converted vehicle of any model in the automaker dealerships only paying the cost of the batteries and motor, with no installation costs (it is called pre-conversion or previous conversion). Industry The electric vehicle conversion industry has grown to include conversion car garages, aftermarket kits and vehicle components. Some companies focus specifically on certain classic cars (i.e. VW Beetle, Rolls-Royce, Jaguar, Citroën H Van, etc.) The work of these companies has been highlighted by publications including Autocar, Fully Charged, IrishEVs and Auto Express as prices have fallen and demand has increased for affordable conversions alongside high-end options. Vehicle types Electric bicycle An electric bicycle is a conventional bicycle that has been fitted with an electric motor. Most often electric bicycles or e-bikes are powered by rechargeable batteries however some experimental electric bicycles run directly on or recharge their batteries via solar panels, fuel cells, gas generators or other alternative energy sources. Using an on-board generator may impact the legal jurisdictional definition of an electric bicycle. A few types of electric bicycles are able to re-capture a small amount of energy from braking and can re-charge the batteries while braking or traveling down hills (regenerative braking). Some electric bikes have features where the motor can move the bicycle by itself (immediate start) if the rider chooses not to pedal with a button or throttle controller, while others require the rider to pedal at all times (pedal assist). This latter type may in some jurisdictions allow the vehicle to be used on bicycle trails that otherwise prohibit motorized vehicles of any kind (see motorized bicycle). Many battery technologies are available for powering electric bikes. The most common and least expensive battery technology is sealed lead acid but LiFePO4 is fast becoming the battery of choice for the e-bike. Converting one's bike to electric with a conversion kit is an easy and affordable solution for most people interested in learning more about electric vehicle conversion. Registration of converted and newly constructed vehicles United States The ease of registration will vary by state. Some states require safety inspections, usually to ensure body integrity in areas subject to severe