Auto World Thunderjet R34 Thunderjet Ultra-G chassis is Auto World's adaptation of the classic "pancake" design, originally developed by Aurora in the early days of electric slot racing. Auto World expanded the design by adding a Neodymium magnet for better control. Still immensely popular today, entire slot racing events are created around this chassis. Thunderjets Ultra-G are retro slot racing at its best! Thunderjet - Release 34 Models: Auto World – Thunderjet R34 1965 Mustang Red/Blue Auto World – Thunderjet R34 1963 Karmann Ghia Yellow/Orange Auto World – Thunderjet R34 1970 Chevrolet Baja Blazer Red/Black Auto World – Thunderjet R34 Sand Van Orange/Blue Auto World – Thunderjet R34 1967 Ford Fairlane Illinois State Police/Chicago Police Department Auto World – Thunderjet R34 1963 Studebaker Avanti White/Red Details: Item #: SC367 1965 Mustang Red/Blue 1963 Karmann Ghia Yellow/Orange 1970 Chevrolet Baja Blazer Red/Black Sand Van Orange/Blue 1967 Ford Fairlane Illinois State Police/Chicago Police Department 1963 Studebaker Avanti White/Red Auto World Includes Neodymium Magnets Track and Slot Cars are 100% Compatible with all Auto World and AFX Race Sets HO 1/64 Slot Cars are 100% Compatible with Tomy and AFX Sets