Setting a camera with a burst mode on a tripod makes it really easy. Layer all the images up in Photoshop or graphics package of choice (images will all be aligned if the camera doesn’t move)
Get busy with layer masks to show the rider in each layer. I normally show all of the 1st layer, then just reveal the rider in each subsequent layer, keeping the rest hidden.
Fun times occur when you should be able to see the rider behind through a bit of wheel, or frame or similar (if the rider was riding towards you/away from you for instance)
Still doable handheld, but a bit more work to do the matching up. I think Photoshop might have an auto blend function that could help, but I’ve not investigated it.
Sorry, no examples to illustrate with.