It reminds me the Chevrolet Volt, which had the opposite "issue".
I was surprised when testing it, when you release the throttle it did not slow down at all. I don't know if it was by default or configured like that by the previous driver, but luckily it can be modified: you can put it in some "eco" mode where it simulates engine braking by re-generating the battery. It makes it behaves more like a standard car then.