The world needs a new source of energy, an unspillable source.

ion propulsion?

i know that nasa has a vessel using ion propulsion to move since ion propulsionis self sustaining, in space wouldnt it always pick up speed if left on? couldnt this end up being a time travelling vehicle?
tom 777 it is a proven fact that black holes consume light therefor are moving at greater speeds. Now ion propulsion may only effect the speed slightly but after time u would still be increasing speed