I don’t think you want a fuel tank that needs to be maintained at -260°F.
I would recommend a CNG fueled, or dual fueled with CNG and Gasoline/diesel.
>>I dont think you want a fuel tank that needs to be maintained at -260°F<<
Ok...I’ll bite. lol Are you saying that the tank on your vehicle must be cooled to -260F? If so, never heard that before.