I have been putzing with vws about 40 years,
I worked for the biggest kit car web site and owned another, owned many vw vehicles.
My dad put over 200k miles on a type 3 wagen and the guy he sold it to another 100k after a head swap,
Ive owned two trikes both vw, i dont like high short trikes, like the munsters look of many vw trikes,
Many vw based customs are built from worn out crap, then blamed for being junk when it was lack of maintenance,
They are what they are, an antique engine drive train that like with any vehicle needs its care,
But i also have learned for me the acvw is a novelty now, my kit car stuff all got sold off to fund vintage vette builds and as much as i love my vw trike if and when the current transaxle or engine takes a dump ill replace it with some small automatic front wheel drive engine and trans from some Asian import, because i can do that cheaper and gain so much more.
Sad perhaps but how i see it,
Your question though, i believe my current trike could drive to cali and back no problem, i dont drive it daily but when i do its at least 100 miles,
Cheers
b