And a modified garage door as the air brake 
What would my ideal car include? Iām going to have to quote Randy Newman on this one:
Big olā nasty redhead at my side.
Foot room would be nice. Flatten those floors.
a Finnish driving instructor.
Dadocta and bscar, Iāll combine your ideasā¦Danika Patrick on the passenger seat.
(Sincere respects to Ms Patrick).
How about a Car with built Sonar or something like that. Sounds Crazy but it would be nice if youāre driving down the road and your vehicle sends out a soundwave and it bounces off an object and sends a signal back to your carās sensor and tells you what the object is. That way you have time to react say like if a deer is on the side of the road. Youāll have advance warning and know to slow down so you can avoid hitting bambi. Or rather than sonar like, it could be like what bats use to locate their preyā¦Ecolocation.
Thatās actually a good addition to my list, katydid. Such systems are becoming commonnly available, as evidence in the Mercedes S class applying the brakes when the vehicle is too rapidly approaching and object, and in the new sutomatic parallel parking systems and the ābackup object detectionā systems.
Night vision systems are also becoming quite advanced now, and perhaps the bullet cameras I listed to replace rearview mirrors could be supplimented with night vision bullet cameras. Imagine having a clear panoramic view of everything to the sides and behind you at night.
And the list builds.
This is rapidly becoming the Batmobile. 
The Batmobile had some good features. Ugly as sin, however.
WHICH Batmobile???
They all had some cool features (for their respective eras)ā¦and were all ugly as sin!
My ideal car would not have a backseat, it would have real buckets for seats, no excuses for stopping now, a canon on front and a brake pedal on the passenger side.
āEveryday useā car: Would be an aerodynamic compact/midsize (think Corolla plus a bit), with the following departures from current design:
- Body style would be station wagon.
- Engine would be small, a fuel-efficient diesel.
2.5) Stick shift. - Would be RWD, with a solid rear axle.
- For long-term durability, NOTHING would be electric that could be manually operated. (Iād even be open to a pneumatic starterā¦with a PTO-type system for running air tools to work on it!)
- Car would either be body-on-frame, or have a reinforced rear unibody to facilitate much larger towing capacities than one would usually associate with such a small car.
- Due to increased towing, car would have larger brakes and spring rates to accommodate this.
āLifestyle/funā car:
Cadillac hearse, with the following modifications:
- The biggest 2-stroke Detroit Diesel thatāll fit under the hood, exhausting thru tractor stacks.
- āRatrodā styling scheme, with the āTiger Mouthā on the front grille (as seen on the P-40 āflying tigersā in WWII).
- The back would be outfitted with a waterbed.
No Brake Pedals on the passenger side! Especially is you have someone like my mom in the car with you! She is the worst backseat driver ever! Iām suprised she hasnāt ripped the āoh crapā handle above the winow on the passenger side of my car off yet! But if one insists on having a brake pedal on the passenger side (this would be ideal when youāre teaching a teenager how to drive), make sure thereās a button or feature on the drivers side that would shut the passenger brake off so the other other person couldnāt use it if you donāt want them to. Kind of like the function on cars which turns off the passenger side airbags.