you have to trust the taxi firm to employ drivers that can drive safely and take your customers to where they want to go safely .. ive been in a position like that before I was scared and did actually make him pull over got out and walked the rest of the way even though it was 1am and I was on my own. I was less scared walking home at that time than being in that taxi. Monday morning I reported the taxi firm/driver to the council. didn't hear nowt else what action they took etc ...
Anyway heres grangemouth's idea of a taxi ...