The heart of a car for me is its engine. For a special car it must be a bespoke engine designed for the car and made by the car manufacturer. An engine borrowed from Toyota no matter if it was tweaked is not pure enough.
Lotus should be able to make their own engines if they want to get promoted to the upper league and play with Porsche.
Hammond appealing to british patriotism is also little suspect, implying absence of more objective convincing reasons to buy perhaps?
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It's not where you're going, it's how you get there that counts
