I am curious about your point of view though.
Could you imagine blending the real world with something like a smart contract?
For example, could you imagine buying a car at a dealership with ONLY a smart contract,
or would you expect to sign additional legal terms along with it?
My feeling is you need both, but thats because some terms seem hard to automate (like a reasonable grace period if youre late on the loan).
Or, how would you resolve a situation where the car is defective or warranty disputes...

I think smart contracts could definitely begin to replace many functions that currently centralized. Selling things such as cars can definitely be done using a smart contract that creates a decentralized marketplace and uses certain criteria to determine if a transaction was successful or if it requires the assistance of a person. Furthermore, smart contracts are being used to sell equity in real estate which is revolutionizing how people purchase investment properties.