What's behind Verstappen's Mercedes GT3 Estoril test?

What's behind Verstappen's Mercedes GT3 Estoril test?
It came as a big surprise when Max Verstappen took to the Estoril circuit in Portugal on Tuesday aboard a Mercedes-AMG GT3 from 2 Seas Motorsport. But there is a serious background to this appearance and it could also have an impact on the four-time Formu >>>

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