Lol I guess that's where we're different ...
If I could buy a motorcycle conversion kit for my bed it would already be bought LMFAO!!!!!
And I would never under any circumstance give my mother a ride on any motorcycle, nor my sister or aunt .... Even without the device ... just ewww.
The device has an on and off switch anyway, I would sit with her till someone came to pick her up but just ewww no, no, no, no.