Just using very simple numbers here. You say the time to get to LV takes 45mins if that is in, say a 737? then at 500mph that is a distance approx of 379m. Depending on acrft of course but an example do it in a C152 you could reckon on 6-7 hours round trip which is not practical? As said very simplistic number crunching. But there are some very fast light singles/twins about.