Elon Tweet regarding LTE [UPDATE: Tweet Removed] Not sure if you follow Elons' Tweets but there has been a guy with 4G on his Tesla and here is followup tweet by another guy. Wonder if Telstra will follow suit? This will help with Sat Nav refresh and Browser if we ever get one. What other advantages/disadvantages? Aaron Renfroe Ξ @Aaronismarried 3h3 hours ago @TeslaMotors @elonmusk When did Model S's start shipping with LTE. Will the be available for older vehicles as well? 0 retweets0 favoritesReply Retweet Favorite Follow More Elon Musk @elonmusk 2h2 hours ago @Aaronismarried @TeslaMotors Yes, will be offered as a retrofit later this year

He needs to seriously filter his tweets by PR first. Though this tweet is really cool once you figure it out (a bit unobvious at first): Another good riddle: drill a hole thru a sphere such that the height of what remains of the sphere is 10cm. What is its remaining volume?

I believe Elon's tweet implied that cars are currently being build with LTE as standard and that later this year Tesla will offer an LTE upgrade for older cars. I am sure there will be a charge for that. I quite like it that he tweets impulsively at times.

The volume of a 10cm sphere with a 0cm diameter hole. A sphere with a hole in it is no longer a sphere!! "I go 1 km South, one km West and one km North. I end up at my starting point. Where am I?"

Without looking up your napkin ring, I claim Dborn has it, other than his "no longer" caveat. Now, I'm basing my claim upon faith that your own puzzle is not being devious in that I am taking it upon your word that, regardless of the size of the initial sphere, once the appropriate hole has been drilled, all such quondam spheres satisfy the identical remaining volume. That being the case, then go to the limits. That is, start with a sphere that is just larger than 10cm in diameter, and drill a hole that is just larger than exactly 0cm. We've almost satisfied the size criterion. Go one step further: start with a sphere of exactly 10cm and a hole of exactly 0cm...and we're there. And that sphere's volume is, of course, 4/3 pi r^3 or, (pi*500)/3 or approx. 523.6 cm^3. So, unless you've slipped us all a mickey, all other such "napkin ring" quondam spheres will have that same volume. QED Now, I made up a new quiz last night but I've forgot it already so we can go back to discussing Elon's Cheshire Cat of a tweet. Yes, I like that: Elon's Cheshire Cat tweets. Just like the one his avatar is holding....

Actually as raynewman pointed out, it also works for near the S pole. You're at a point near the S pole, go 1 km south to a location where the circle around the S Pole is exactly 1 km, turn to the W, walk around the S pole, then go north 1 km and you're back at your original position.

Or, at a point nearer to the S pole, go 1 km south to a location where the circle around the S Pole is exactly 1/n km [for any counting number n], turn to the W, walk 1 km, then go north 1 km and you're back at your original position. This puzzle has an infinite number of solutions.

This thread may help and is still rather active ... http://www.teslamotorsclub.com/showthread.php/48305-It-looks-like-I-have-LTE-enabled/page13

I googled LTE and it brought up a lot of pages regarding the 4G network. Useless for markets where the browser is disabled on the Tesla