The Automotive Directory Featured Sites Used Cars Used car listings and dealerships across the country, as well as informative articles for the used car buyer and seller. Listings Blue Sky Design - products include Aerocoupe M3 parts and Electrathon vehicle kit. Brusa Electronic - Power electronic technology for vehicles and boats. AC drive systems, battery chargers, DCDC converters, Maximum Power Tracker, and so on. Curtis Instruments, Inc. - manufacturer of electric vehicle components: motor speed controllers, battery fuel gauges, etc. Horlacher AG - KTA Services, Inc. - offering electric vehicle components, kits, publications, and design.