Need Help! What lens Should I Get For Video

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Hi I have a Nikon D3200 and I use it for filming banger racing. I'm looking to buy a lens that can allow me to zoom in very far while I am filming. Does anyone have any suggestion on what I should get? I use to use a Sony HD Handycam and that had 50x zoom and that was fine for me but this D3200 is my first DSLR so I don't know what lens to get. The lens it came with doesn't zoom far enough.

Thanks