Sadly, Republicans haven't been fiscally conservative in decades. If you think Telsa's best chance is under the more fiscally conservative party, they it's not the GOP you'd want to have in power.
I considered myself conservative for fiscal reasons in my youth, but the GOP doesn't embody that (they talk about it endlessly, but they don't walk the walk) and consequently I don't vote for them.
Ten Largest Annual Percentage Increases in Total Regulatory Budget in the Last Fifty Years | Intellectual Takeout (ITO)
Fiscal Fact Checker: How Much Has Spending Increased Under President Obama? | Committee for a Responsible Federal Budget
You need to be libertarian!