Actually has cerebral palsy, the same condition his character in Breaking Bad (2008) has. However, his real life condition is much milder; he had to learn to walk with crutches and slow down his speech for the role.
One time I semi-wrecked my uncle's truck. He told me to back it up into a ditch, but my foot slipped and I gunned it a little too much. But now I use one foot, and I do not run into stuff - at least I try not to.