Jason Hughes Profile picture
Head Tinkerer. (I hack Teslas, among other things.) https://t.co/1zdTfKsUUQ
Jan 9, 2023 11 tweets 2 min read
FSD rant.

Still at a loss to as to how some can say Tesla FSD is so amazing.

I've now tried this on 10+ diff vehicles, in different areas (including areas people claim it works well in), and it's still pretty much useless for me.

It does *NOTHING* well EXCEPT lane centering. Simple right turns are probably < 25% success. Protected lefts < 50%. Unprotected lefts < 10%. Correct lane selection < 50%. Proper yielding to traffic < 50%. General navigation < 75%.

For example: I have a spot it will make a left, but just aim for the median. 9/10 times.
Nov 13, 2022 29 tweets 6 min read
I want to drive home how impossible "Sudden Unintended Acceleration" is in a Tesla, why any issue with the autopilot/FSD system can't do this, and a few other myths and technical aspects of this whole thing in a thread.🧵 (Which ended up longer than expected.) Image Claim: The brakes get disabled and the driver can't stop!

Reality: False. The brakes are still a completely mechanical system in all Teslas, and function even with no power if you press the brake pedal. The brakes are also more than strong enough to overpower the motors...
Nov 11, 2022 5 tweets 2 min read
More fun in the 🔋🚗 age VHS vs Betamax battle!

My prediction:
Gov't + VW funds for already under-maintained NA CCS station deployments dry up;
CCS keeps its horrible reliability track record as folks stay frustrated;
Tesla wins this before the end of the decade.⚡️
🤷‍♂️

Thoughts? There's just insufficient incentive for any company to truly invest in a NA CCS network. Pretty much everything so far is subsidized substantially one way or another because it's not a profit driver. The ROI on a 350 kW CCS station is nonexistant in any realistic time period.
Jul 25, 2022 16 tweets 4 min read
Tesla really fires me up sometimes.😡🧵

I have a customer who's the ~3rd owner of a 2013 Model S 60.

At some point years ago the battery pack was swapped under warranty with a 90 pack. It wasn't software limited. It was effectively made into a 90 by Tesla.

Years went by.
(1/*) Car is sold twice since, and now has a new owner (my customer). It says 90, badged 90, has 90-type range.

He has the car for a few months, goes in and does a paid MCU2 upgrade at Tesla after the 3G shutdown.

All goes well. The upgrade is done, car is working fine.

(2/*)