Not sure how that's possible - Maine Road, and particularly the away end - was behind the last row of houses so cars wouldn't have been anywhere near the agg which was on the concrete outside the turnstiles.
It could have happened on one of the other exits around the stadium closer to roads/traffic but that would require two chain wielding headcases.
The away end was a third of the stand behind the goal and the corner next to the massive Kippax stand (on the left hand side of the pic)
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