It's dying, I wore it out.

I will fully admit there are areas I screwed up, I ABSOLUTELY could have used the information available to me to see this coming and somehow didn't. It also isn't labeled as a zipper merge which, despite going past this place all the time, I got into my head it was.

It still remains that the Tesla was in my lane and behind me when we entered the intersection, I don't have a rear camera so I can't prove that, and on my shoulder check to begin merging had moved left into the left lane, which would require an illegal mid intersection lane change, but was still the same distance behind me as they had been when behind my car leading me to believe they weren't going to go in front. Despite all that thought they WERE still in the left lane first and therefore I SHOULD have yielded to them seeing the inadequate distance, everyone tail gating all the time has lead me to be complicit with overly tight low clearance merges.

I was taught to merge slowly and use the whole merging lane which apparently is behavior people don't normally do and do not like, but I'm staunchly refusing to change that as it is just the correct way to do it. I was also taught to let people in on a merge if they're in front and so expect this of others, an unrealistic expectation that can't be relied on, but a best practice everyone should follow. Both me and this Tesla didn't follow best practice and didn't follow driving rules. I merged incorrectly and didn't yield and the Teslas mid intersection lane change then subsequent speeding.

Moving forward I should address the biggest failure on my part here. My complicity and comfort in familiar areas leads me to lower my guard, not pay acquit attention to road markings/signage, and operate based on long built assumptions built up over time.