I don't want to harsh your (admittedly cool) buzz. That said, the current top speed record for ANY 1/10 RC car is only 110mph. So trying to put together off the shelf components to hit 100mph (less that 10% slower) is not going to be a slam-dunk.
Here's what I've found for you, though:
This is the BK 20150 car controller, and is rated for 4 to 20 1.2V cells (so 14.4 or 12 cells is a good fit) and it can handle up to 150 Amps.
Next up is the Feigao brushless motor 540 8L
(about half-way down the page)
at 14.4V and 3072rpm/volt, that's about 45k rpm. And both the motor and the controller can handle more cells, so you can probably bump that up to 50k with some judicious gearing choices. Also, with the bigger controller, if you can squeeze in a bigger motor, the controller will be able to handle it.
Now that said, assuming a TC tire diameter of 59mm, (7.2974 inch diameter), 100mph is 528,000 ft/hr = 8800ft/min = 105600 in/min.
This requires a tire speed of 14,471 rpm to hit 100mph. My Pro4 has an internal ratio of roughly 2.4/1, so with a motor speed of 45k rpm, you need a pinion/spur ratio of 1.29578/1 to hit 100mph. With a 100t spur, this equates to a 77 tooth pinion.
I'm pretty sure that any motor is going to have a tough time pushing a ratio that tall. It might get there eventually, but it's going to take a LOT of room to get there. You might even have to follow it in a chase vehicle to make top speed.
So I guess all I can say now is what is so often said in these situations. I think the controller I suggested will cover you, but you'll have to put some time in to find the perfect motor. Once you do, put it together, grab a radar gun, and let us all know how it works! Who knows - if you do it right, you might have YOUR name up as the world's fastest RC driver!!
Oh yeah, and make DARN sure you get a video!!!