I'll put this here. If you don't mind If you mind say so and I'll remove.

Observations from my ears of the taxidrivers recording.
Only the first 1.10sec because there she is not moving, if someones moving pinpointing is harder to do.

1,
From 0,00 til 0,01sec, there are 4 shots in the distance (or maybe an echo of 4 shots fired before the recording started.

2,
Then at 0.03 there are 8 shots close by, at aproxomatly 580bpm (beats per minute)

At 0.06 there are 8 shots in the distance or it could be the 8 shot echo.

3,
BUT at 0.45 sec this is not the case, “the echo” starts firing first. And fires much longer

2 shots a split second pause then 8-9 shots

4,
then at 0.50 sec, through the talking of the woman, the sound also coming from in the distance first, so not an echo, 3 shots (I call this A)
a splits second pause and then 3 shots, (I will call B)

Listen on repeat and hear how the bpm of A is much lower than that of B
The sounds differ also. So A is not an echo of B.

5,
Then 1.07 you hear close by 1 shot, then, a split second pause followed by 12 repetitive shots
Then a what seem to be an echo of these shots, but I can't hear the first shots.
but the rythm (of the echo) is the same.

6,
Then what follows is hard to hear/count because the firing is to long to count and all the echo from the bridge or wall she's driving through make it really hard to keep count.

These are some observations I'm not saying they are correct. But for me this can't be explained away with the “echo theory” Especially the shots heard at 0.45 sec and the shots at 0.50 seconds where there are not shots nearby heard right before.