well toon that's the price of riding a legal bike......There is a work around to de restrict the Bosch unit with a you tube video in German that shows how to do it.....I'm down in Spain at moment on travel laptop so no access to PC. But if you do a search on here it should be on here somewhere, that being said the search function not that great....
My de restricted Daahub also does 20-23mph, but I really enjoy the Bosch system and it is a joy to ride...But I'm not commuting, so that is were you are getting frustrated. E bikes hold a unique position in law and it would be a shame to loose this......