Be careful with driving van's thinking your insured on a car policy. My mate told me to check my policy as i wanted a loan of his van and to my suprise they told me the third party cover i had didn't cover van's as there comercial vehicles

I ended up using RAC dayinsure to cover me cost £25 for the day but it was cheap for piece of mind and defo cheaper than a fine lol

Maybe you'd be better considering this kind of option depending on the distance as it might work out cheaper to just go in a van and be positive it would fit