"One Upmanship" joke

A man from Texas, driving a Volkswagen Beetle, pulls up next to a guy in a Rolls Royce with Nevada plates at a stop sign. Their windows are open and he yells at the guy in the Rolls, "Hey, you got a telephone in that Rolls?"
The guy in the Rolls says, "Yes, of course I do."
"I got one too... see?" the Texan says.
"Uh, huh, yes, that's very nice."
"You got a fax machine?" asks the Texan.
"Why, actually, yes, I do."
"I do too! See? It's right here!" brags the Texan.
The light is just about to turn green and the guy in the Volkswagen says, "So, do you have a double bed in back there?"
The guy in the Rolls replies, "NO! Do you?"
"Yep, got my double bed right in back here, see?" the Texan replies.
The light turns and the man in the Volkswagen takes off.
Well, the guy in the Rolls is not about to be one-upped, so he immediately goes to a customizing shop and orders them to put a double bed in back of his car.
About two weeks later, the job is finally done. He picks up his car and drives all over town looking for the Volkswagen beetle with the Texas plates. Finally, he finds it parked alongside the road, so he pulls his Rolls up next to it.
The windows on the Volkswagen are all fogged up and he feels somewhat awkward about it, but he gets out of his newly modified Rolls and taps on the foggy window of the Volkswagen. The man in the Volkswagen finally opens the window a crack and peeks out.
The guy in the Rolls says, "Hey, remember me?"
"Yeah, yeah, I remember you," replies the Texan. "What's up?"
"Check this out... I got a double bed installed in my Rolls."
The Texan exclaims, "YOU GOT ME OUT OF THE SHOWER TO TELL ME THAT?!"