[nascarnation]

Fun stuff. I think its only downside is that it’s a fair weather car, but fast, fun, and good fuel econ (if prices go back up).

[familyop]

"Fun stuff. I think its only downside is that it’s a fair weather car, but fast, fun, and good fuel econ (if prices go back up)."

Yes. Some owner-builders have had rag tops made for them, but that's about it. The Caterhams (U.K. Locost manufacturer) have rag tops as options. See YouTube videos with Locost or Caterham as keywords. Oh...and heater cores and valves can easily be designed into them and installed for heating. Homebuilt ducts can be built with fixtures for fans. I've even seen duct work home made with carbon fiber.