Andi Bell isn't an autistic savant, meerly someone who has trained their brain to be able to memorize and codify information in the brain using advanced mnemonic techniques.
If you're interested in this kind of thing, let me know. I'll be happy to give you more information. You can email me at firstname.lastname@example.org , and I will happily respond. I love emails :). I will 100% respond.
Hopefully you will enjoy this video as much as I did.