When Android Auto was first introduced, your only option for using it was to buy a brand new car. But soon enough, third-party head units (like the lovely Sony one pictured above) started showing up. Now that you can run the full Android Auto interface on your phone, you don't strictly need a compatible head unit, but they're getting cheaper anyways.

Now you can get the Sony XAV-AX100 and XAV-AX200 head units for $50 off the usual prices.

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