Is it legal to buy and use that race fuel on the streets? Or is it only legal at race tracks? Do you know how much of your fuel prices are for taxes? I was stationed in Germany in 1967-68 and G.I could buy books of 200 liter fuel coupons books at Post Exchange for right at .21 cents a gallon for regular and .23 cents a gallon for the premium gasoline. That was a little bit more expensive than I was paying for the same brand of fuel in the states in California back then  The German citizens paid between .91 cents and 95 cents a gallon for the same amount of volume in liters at the same pump  We where told that G.I didn't have to pay the German fuel taxes per liter that the Germans did   As far as I know it is legal to run race fuel on the streets, at least in England. As long as the duty has been paid you're good to go. It is cost prohibitive though. Typically, at more recent exchange rates, it works out around $30.00 a US gallon. I've never heard of anyone ever having petrol tested but Her Majesties Revenue and Customs (HMRC) do random road side checking for "red" diesel on a regular basis, red diesel is used for agricultural vehicles only and is exempt from fuel duty (tax).
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
| 
