Version 6.0.0 was marketed as a "remade" version of the game. Its core features included:
Extreme Car Driving Simulator v6.0.0 was a major 2021 update that significantly overhauled the game's engine and graphics. While the game has since progressed to newer versions like extreme car driving simulator v600 link
Extreme Car Driving Simulator is an open world car game in the racing games category. Extreme Car Driving Simulator - Apps on Google Play Version 6
The V600 version is not on the Google Play Store (they only host the latest ad-filled version). You must sideload it. extreme car driving simulator v600 link
Always download driving simulators from official app stores or verified developer websites to ensure safety and performance.