Ok, maybe more of a throttle control, but anyway, it's easy cheesey
This location is easy for the right hand, and a push with the palm shuts it down. Can always use the thumb kill switch to shut down engine or clutch to disengage (and it's only a 3cyl metro here) so not too worried about runaway.
It could be lined up left-right a little better on the chain side (needs a zip tie), but it works pretty good as is, and I only had to remove the center console to install it.