Complex sentence: The first Trident Clipper Convertible prototype was displayed at the Racing Car Show at Olympia in London in January 1966 but little more was heard until the first Clipper Coupe was shown, again at the Olympia Racing Car Show, in January 1967.
Split into simpler sentences: The first Trident Clipper Convertible prototype was displayed at the Racing Car Show at Olympia in London in January 1966. Little was heard until the first Clipper Coupe was shown, again at the Olympia Racing Car Show, in January 1967.