Motorhot Portable Threshold Ramp Wheelchair Doorway Access Door Anti Slip Ramp 8"x 32"

Is this rsmp foldsble to be taken in the car to use when going out?

Can I use this to get an electric wheelchair down a front porch step, how does it hook on and keep from sliding or falling off?

Can this ramp be used for a scooter?

A few days ago I found a wheelchair ramp for a threshold height of approximately 2.5 in. The cost was about thirty something dollars. Where?