Sadly, water cooling will be the only way to meet ever tougher emissions requirements as well as satisfying the rest of the market that won't buy a Himi since it is so underpowered....by their standards anyway. Even Moto Guzzi is coming out with their first water cooled bike, the V100 Mandello. I LIKE air cooled bikes but I also like petrol powered bikes and water cooling is going to be the only way to extend the availability of the ICE engines we prefer. Thankfully, I am old enough that I will not ever need to own an electric bike, at least here in the USA.
9fingers