Maybe one of these similar products would be of interest:-
300lb 2.5HP Portable Folding Treadmill w/Desk for Home Running Machine w/Incline
Folding Treadmill W/ 3 Levels Incline for Home Running Exercise Max Load 265LBS
Walking Pad Under Desk Treadmill 220.46LBS Capacity Folding Treadmill W/ Remote
3.25HP Folding Treadmill w/Incline & 18" Wide Belt Running Machine w/36 Programs