Sitting down to dinner with Dr. Kay Segler, head of BMW's M Division and former chief of Mini, is an engaging prospect for any performance and luxury car enthusiast, but this dinner proved not only entertaining, but enlightening.

There's no better source for what's planned behind the scenes at BMW's famed performance haus, and Segler gave us a few enticing hints of what might be on the way over the next several years. First on the list is the M3 GT4.

The car contested this year's 24 Hour Nurburgring endurance race through BMW's Customer Racing program, and the M Division is now considering the car for limited production so that more entry-level race teams can compete, according to Segler. He emphasized the importance of grass-roots participation in motorsport and the M Division's interest in helping to preserve and promote that aspect of competition. And that's a sentiment any enthusiast can appreciate.

Segler also discussed the possibility for a diesel M-car, but dismissed it as unrealistic until America embraces diesel more deeply since the U.S. is a key market for building any business case for a luxury or performance car. This is a familiar response when dealing with European automakers, and you can clearly see that the desire to put the cars out there exists, but without a market that's willing to pay the diesel premium it simply doesn't make for good business.

Finally, the M Sports line of vehicles was mentioned as a potential in-between line to bridge the gap between BMW's standard vehicle range and the M Division's offerings - sportier and offering an improved level of performance, but not as focused and dedicated as the M vehicles tend to be. While many might say BMW already has too many models and variations, there is a certain logic to the idea that means it could just see implementation.