In my long-ago-and-far-away-carfree-racerboy days, I hitched rides with fellow team members. That way, I was not adding any (or very few) net car miles.
I also rode to al the local team rides, but that was normal then and there. It is relatively rare to see people ride to group rides here/now, but that is partly because the town sprawls so much, people and rides are very spread out.