Look up Santiago Bernabéu or Camp Nou, two of the largest stadiums in Europe, and you find no over ground parking lots. Same applies to most stadiums, with many actually being very well articulated with mass transit, to the point that it’s much quicker to just take the subway/train/bus on match day than to be stuck in traffic for hours.
Why do you ask this as if it’s not a thing?
Look up Santiago Bernabéu or Camp Nou, two of the largest stadiums in Europe, and you find no over ground parking lots. Same applies to most stadiums, with many actually being very well articulated with mass transit, to the point that it’s much quicker to just take the subway/train/bus on match day than to be stuck in traffic for hours.