The `Cars 2` actress - who has children Sam, seven, and 18-month-old May with husband Alessandro Nivola - wants to buy a car but her spouse has suggested she stay off the roads because her abilities behind the wheel are limited.
She said: "My first car was an old Saab. And then I had a BMW that my father-in-law joked he needed tetanus shot to get into because it was just so full of old half-eaten sandwiches and bits of coke cans and things.
"But my husband doesn`t allow me to drive anymore because I`m very unreliable.
"We live in New York and my husband refuses to get a car because it`s just so nightmarish parking and I`m desperate for a car. I don`t know why, I just really want one."
The 39-year-old star recently borrowed a vehicle from her friend to prove to her husband she could cope, but admits it turned out to be a disastrous move.
he said: "I borrowed a friend`s car when they went on holiday to prove to him it would be fine and within the space of a morning, I got three tickets and when I drove past into the back of another car the number plate fell off so I had to take it to a garage.
"The same time, I got ticketed for driving while I was on my phone, driving without a seatbelt and then for parking in the wrong place. So yes, I`m banned from driving now."