Yeah, Houston never gets snow, period. Snow is Houston would be like snow in Seville. It just doesn't happen. Up here in Dallas we get it yearly, and guess what, for every person that fails at driving, there are a thousand that seem to handle the snow and ice just fine.
I have lived in a town 40 minutes NORTH of Houston for about 15 years. It snowed (ironically) the day we moved to Canada in 1993, and then it only covered the ground. It snowed in 1996, same deal. It snowed there overnight last night and it was only an inch.
Some of my friends have never seen snow their entire lives, so Houston, a large city that is farther south than me, has even less experience.
You have to keep in mind that Texas is a 12-15 hour journey from bottom (Brownsville) to top (Amarillo). We have all sorts of climates.