BMW reveals its secret E46 M3 Touring prototype

BMW is almost ready to reveal a new M3 Touring based on the latest G80 M3 generation, but it won’t actually be the first M3 to receive the longroof treatment. Just over two decades ago, BMW developed a prototype M3 Touring based on the E46 M3 generation on sale at the time. The production green light was never given but BMW decided to hold on to…