You don't need to drive your car anywhere.
Just get one of those old fashioned oil hand pumps and do the reverse bleed. I bought mine from Hornbach but I think I have also seen them at Obi as well. Any German hardware store will sell them. This one I bought at Hornbach, it is made by "Presson". Was like eight euros I think. I bought it just bc I wanted to have serval "tools" to bleed the clucth line.
The best way is to use a pressure bleeder... but this reverse meathod should work too.
Sounds like you introduced quite a bit of air into your clutch hydro circiut. Make sire to keep topping up the brake resivior as you bleed the system tomorrow.
You should also have some 6mm I.D. clear plastic hose on hand and some new brake fluid.
Presson hand oil pump...
PS: Why not bring a case a beer to your local BMW dealer and ask to "borrow" thier pressure bleeder. Tell them what your problem is... I bet they would help you out. Don't ask the service guys... just go out and talk to the shop Miester.