Updating the readme.md to make it easier to follow (#29820)

* upadting the readme.md to make it easier to follow

* addressing pr comments

* addressing the pr

* Update README.md

* bold

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Co-authored-by: Harald Schäfer <harald.the.engineer@gmail.com>

README.md

@@ -39,13 +39,17 @@ Running on a dedicated device in a car
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 To use openpilot in a car, you need four things
-* A supported device to run this software: a [comma 3X](https://comma.ai/shop/comma-3x) or comma three.
+1. **Supported Device:** A comma 3/3X. You can purchase these devices from (https://comma.ai/shop/comma-3x)
-* This software. The setup procedure of the comma 3/3X allows the user to enter a URL for custom software.
-The URL, openpilot.comma.ai will install the release version of openpilot. To install openpilot master, you can use installer.comma.ai/commaai/master, and replacing commaai with another GitHub username can install a fork.
-* One of [the 250+ supported cars](docs/CARS.md). We support Honda, Toyota, Hyundai, Nissan, Kia, Chrysler, Lexus, Acura, Audi, VW, Ford and more. If your car is not supported but has adaptive cruise control and lane-keeping assist, it's likely able to run openpilot.
-* A [car harness](https://comma.ai/shop/products/car-harness) to connect to your car.
   
-We have detailed instructions for [how to mount the device in a car](https://comma.ai/setup).
+2. **Software:** The setup procedure for the comma 3/3X allows users to enter a URL for custom software.
+  To install the release version of openpilot, use the URL `openpilot.comma.ai`.
+  To install openpilot master (for more advanced users), use the URL `installer.comma.ai/commaai/master`. You can replace "commaai" with another GitHub username to install a fork.
+
+3. **Supported Car:** Ensure that you have one of [the 250+ supported cars](docs/CARS.md). openpilot supports a wide range of car makes including Honda, Toyota, Hyundai, Nissan, Kia, Chrysler, Lexus, Acura, Audi, VW, Ford, and many more.
+  If your car is not officially listed as supported but has adaptive cruise control and lane-keeping assist, it's likely capable of running openpilot.
+  
+4. **Car Harness:** You will also need a [car harness](https://comma.ai/shop/car-harness) to connect your comma 3/3X to your car.
+  We have detailed instructions for [how to install the harness and device in a car](https://comma.ai/setup).
 
 Running on PC
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