As a classic car owner myself I started dabbling with the idea of drawing some pseudo blueprints of my own MGB roadster. Then my brother's cars were drafted up followed by a handful more until I have a dozen or more available as fine art prints.

current blueprints
1973 MGB Roadster 1975 MGB GT Coupe 1957 Land Rover Series 1 107 1973 Triumph TR6
1956 MGA Roadster 1973 MG Midget 1964 Triumph TR4 1973 MGB GT Coupe
1966 Rover P6 3500 V8 Series I 1966 VW Karmann Ghia Coupe 1964 VW Beetle 1200 1975 MGB Roadster
1962 Austin Healey 3000 MkII 1957 Austin Healey 100/6 1962 Austin Mini Cooper 1998 Mini Cooper