BMW made a proper E30 M3 Convertible, but it was just never released. BMW then took that convertible one step further and made a pick-up truck E30 M3. BMW engineers needed something to haul parts and equipment very quickly with, so they took a regular E30 convertible, converted it into a pick-up and slapped in the M3’s powertrain and suspension.
Over the next 26 years, BMW's M division used the vehicle regularly, only retiring it in 2012. And while it started life with the emissions-restricted 192-horsepower two-liter engine used on some E30s, it eventually received the S14 four-cylinder used in the original M3.