Again, this is for the dealer to correct as you would naturally have assumed that a car ordered for Germany would be LHD. As you say, you want a LHD car so the suggestion about possibly getting used to RHD does not apply. Do not accept delivery under any circumstances or the problem will be yours. There is a ready market for new 3 wheelers in the UK, it should be very easy for any UK dealer to sell it, but I presume your dealer will have to pay for shipping back to UK. Also there are plenty of LHD 3-wheelers being built - I was at the factory a couple of weeks ago and the majority being built were LHD!