“..It would be my first choice for home defense or use for automobile self defense...’
You may like micro Tavor also known as X95. It will be made in 7.62 NATO in the near future(currently available in 5.56 only)
Tavor also can be converted to 9mm.
So they tell me.
Should be available in 2 years , 3 months, 14 hours, 23 minutes and 37 seconds.
The 9 mm is a hoot but don't see the point in semi auto only except for the fact that it has serious entertainment value. In select fire it would be a super sub gun IMHO.