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Hello world SirLaurenceNZ here and I recently had an idea for an interesting concept (if you know of anyone who has previously brought up this idea up previously I'd love to know and knowledge them.) The idea placing your rockets from the VAB on the launchpad with empty fuel tanks, then using a vehicle with the appropriate mining equipment to refuel your rocket prior to launch. This can be done using a set of radial decoplers with fuel cross feed on and a docking port (which can be ejected before launch.) Alternative ideas that might be worth investigating in terms of refueling is having a helicopter type plane with jet engines and rcs for lateral translation. this would help you to refuel things from above if refueling if the angle on the launchpad is not an option. Below is an example which I had tested on the grass next to the runway and also on the launchpad (the launch pad is significantly more difficult.) Note, the three of those fuel tanks would refuel in approximately 7-8 days (ksp time) adding essentially a construction time for fueling your rocket. http://imgur.com/a/LjDQV (anyone know how to directly attach an image?) I'd just like to thank Marcus House for highlighting fuel costs in career mode in the most recent episode of his great LP (180k funds in fuel,) cheers. Marcus's channel here --> https://www.youtube.com/channel/UCBNHHEoiSF8pcLgqLKVugOw/videos (suggested improvements is using the claw instead of the docking port, cheers Marcus)