im cam, a 20 year licenced tech.
though accidently putting this in is not a panic situation, driving with it in is.
It needs to be either siphoned out or towed to a shop to be drained. driving with it will ruin the injection pump and everything else.
a siphon hose and a couple of fuel cans will be alot less expensive than a whole new pump system.
it willl be a bit time consuming but it is neccasary.
once the fuel is out than fill with diesel to dilute.
If you do not feel comfortable doing this than i woyld spend the money and have it towed.
I wish i had a more positive answer, but this is the correct one
thanks in advance for a positive rating!
and good luck with your repair!