The last time the Dinan name graced the pages of Autoblog, Michael Harley was waxing poetic about the S3-R BMW 1M Coupe, a car that still stands in his ranks as one of the best cars he's ever driven.

We love the 5.0-liter V10 from BMW. Besides having an affinity for any ... to induce all sorts of tail-wagging fun from the outgoing M5. That doesn't mean there's not room for improvement, however.

Dinan sold his company in 2013, and our recollections of screaming inline-sixes and V-8s started to fade. Enter CarBahn, ...