I would use what you already said, and include a generic description of autism and what kinds of accommodations the employer could make without hampering the company's productivity. Additionally how you concluded how the end result logically didn't need that extra step could be a benefit if the company is looking for more efficiency
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Let's go on out and take a moped ride, and all your friends will thing your brain is fried, but you can't live your life too dirty, 'cause in the the end you're born to go 30