"Sufficient" is a good term.
I am not someone who reflexively criticises so-called kit lenses (the 16-50 mm is such a kit lens), but the enclosed 16-50 mm f/3.5-5.6 is unfortunately indeed one of the weaker representatives of its genre.
What bothers me most about it is the rather mediocre contrast and the equally mediocre colour reproduction.
Nevertheless, the kit offered with the A6000 and this lens is a good start. Above all, if you are not yet sure which focal lengths suit you, the 16-50 mm is a good way to try out whether your next lens should be a little more wide-angle or more in the direction of a standard focal length.
If you are happy with the 16 mm starting focal length of the kit zoom for your car and nature photos, I would recommend the Sigma 16 mm f1.4 DC DN (
https://www.digitec.ch/de/s1/product/sigma-16mm-f14-dc-dn-c-sony-e-objektiv-6976537) and if you find your personal comfort zone more at 30 mm, the Sigma 30 mm 1.4 DC DN.
With both lenses you would have a very strong package on the A6000, with which you would combine great speed with excellent optical performance and that at a fair price.
Just for the sake of completeness: I am not a Sigma employee and have no other relationship with the company, but the two fixed focal lengths mentioned are probably the current benchmark for APS-C lenses for the Sony E-mount bayonet.
As I said, you can't go wrong with the kit you asked for, don't let me stop you and have fun getting started.
