Happy New Year

I am trying mobile operations for the first time...FT8900 Quad band XCVR
and Diamond CR8900 quad band antenna (10, 6, 2M and 440Mhz). I am
mounting the antenna on the hatchback of an Element.

I am wondering how significant is the proximity of the AM antenna (a
stubby affair presumably housing some sort of coil?) to the new ham
antenna. I can mount the antenna on the driver's side of the hatchback
or the passenger side. The passenger side is within a foot or two of
the AM stub antenna.

I would think in either case the AM antenna is in the Near Field.
Will the antenna pattern be significantly more affected on the passenger
side?

Thanks in advance for all helpful replies

John
AB8O