He was going westbound on Alta keeping getting further past his home until after going even further they then 'turned around' (U-turn), so they'd then be going eastbound on Alta. From there the fastest way to his house is going to Cimarron and then going eastbound on Cherry. This is BM saying the lights were coming down - not up - Carmel Peak: "I saw headlights coming down Carmel Peak." Coming down Carmel Peak means you were on Cherry River rather than Alta.
Most people in the northern hemisphere would say "coming down Carmel Peak" if they were referring to someone going south on Carmel Peak. But maybe BM is from Australia or something, because on pg. 140 of the GJ transcript, BM says this:
"A. How this street is right here, they were coming from this direction on the right hand side, they were coming down, I saw headlights coming towards Mount Shasta"
On Mt. Shasta, looking toward Carmel Peak, "coming from .... the right hand side" would be coming north, not south.
This is confirmed in the arrest affidavit, in which BM reportedly said this:
"Brandon said as he was trying to get his mother out of the car he saw headlights coming north on Carmel Peak"
So we know (I think) that Brandon did in fact mean that he saw the headlights traveling north on Carmel Peak. That seems to correlate with Mogg's hard-to-understand description of the route EN said the Audi took.
But that route doesn't allow for the Audi to show upon the surveillance footage traveling
east on Cherry River. If the Audi was traveling east on Cherry River, it would have then turned
south onto Carmel Peak.
Miss Muffet suggested that the Audi perhaps went north on Carmel Peak, then turned onto Cherry River to check out EN's house, then back east on Cherry River and south on Carmel Peak. That would account for the car appearing in the video traveling eastbound.
But that doesn't
quite work, because in both the arrest affidavit and the GJ testimony, BM's description doesn't allow for the Audi to have gone north on CP past Mt. Shasta, up to Cherry River, and then back south again. He describes the headlights as coming
north on CP and turning onto Mt. Shasta, period.
Plus, if BM saw the headlights of the Audi going north on Carmel Peak past Mt. Shasta, he and TM would have had
plenty of time to get into the house before the Audi reached Cherry River, passed EN's house westbound on Cherry River, turned back around to come back eastbound on Cherry River, turned south onto Carmel Peak and thence to Mt. Shasta. But there
wasn't that much time; BM saw the headlights coming north on Carmel Peak, he pushed his mother back into the car and took off for the house, and the Audi was immediately in the cul de sac shooting.
I'm back to not knowing what route the Audi took. If it took the route that BM saw and that Mogg seems to be describing, then it could not and cannot be the car in the surveillance video. But the car in the surveillance video almost
has to be the Audi and in that case, both BM's description and Mogg's description of its route are wrong.