So... had the first "driving-practice-hour" today (with my father as co-driver) and... driving is no problem at all. The only problems are starting, shifting and all the other cars on the roads. :P
And... I phoned with the headmaster of the school. She was very happy to hear about me, because she lost six teachers.
(so I am the only supply teacher the administration sends for six missing teachers... *lol*). I have an appointment at the school next Monday - so I hope, my driving practice during the weekend will be enough.