My parents pickup truck is shutting my internet off.?

[Merrycamp075]

Ever since my parents got their pickup the internet in my room just turns off! my room is close to the parking area by my house and if i move my macbook to the living room or the kitchen the internet seems to work fine but when i go to my room it just shuts off, when the car is not parked then the internet in my room works perfectly. If you have an answer for this or have had the same problem please let me know. its been like this for about 5 or 6 months.