I'm not sure what you mean by "motorized help".
I run 2400m/1.5mi in about 9:30 or about 6:25/mi. That's not at all fast by competitive running standards but it's not exactly jogging.
I have found that overuse problems aren't as common as technique problems, whether we're talking about running, lifting or whatever else.
Footwear and training modalities are totally a personal choice. That said, no amount of cushioning or motion correction will protect your joints from the long term effects a heavy foot strike. It will, however, protect your feet so you don't get that immediate, negative feedback that tells you not to do it that way.