On the contrary: Cars are replaceable because they are high-tech. Ford and GM work extremely hard and pay big money for industrial engineers to ensure that every part of their cars are replaceable, and to set up the supply chains to create a thriving after-market environment.
The fact is that Tesla simply isn't prioritizing user replaceable car parts yet. That's fine, as Tesla has a grossly different business model than Detroit.
Replaceable parts is the cornerstone of long-term reliability of machines. And it takes a lot of technology, design, and engineering to make that happen. Electric cars, as a newer technology, don't really know what parts fail in the long term, or what should be or shouldn't be replaceable yet.
In any case, I can imagine a set of gears that doesn't have any supply chain, and may be hard to replace. Just because a transmission is made of mechanical parts doesn't mean its actually practically replaceable: you need suppliers who are building the parts as well as mechanics (or books / guides) that share the knowledge of replacing those parts.
Similarly, I imagine that future electric cars will figure out what should be replaceable. Tesla clearly hasn't figured it out yet however.
The fact is that Tesla simply isn't prioritizing user replaceable car parts yet. That's fine, as Tesla has a grossly different business model than Detroit.
Replaceable parts is the cornerstone of long-term reliability of machines. And it takes a lot of technology, design, and engineering to make that happen. Electric cars, as a newer technology, don't really know what parts fail in the long term, or what should be or shouldn't be replaceable yet.
In any case, I can imagine a set of gears that doesn't have any supply chain, and may be hard to replace. Just because a transmission is made of mechanical parts doesn't mean its actually practically replaceable: you need suppliers who are building the parts as well as mechanics (or books / guides) that share the knowledge of replacing those parts.
Similarly, I imagine that future electric cars will figure out what should be replaceable. Tesla clearly hasn't figured it out yet however.