Big triangle takes off at the speed of light.

Heading on PA turnpike heading towards Bristol area, appeared to look like lightning in the sky. But skies were mostly clear. A triangle shaped object appeared, lit up very bright and took off and disappeared into the clouds. The aircraft looked like it had 3 engines on the back and upon taking off left a long trail of lights until it was gone.What looked like lightning may have been lights off the aircraft. As cliche as this might sound it looked like it was something out of a movie. From star wars where a spaceship gets ready for "light speed". I've never seen anything like it in my life. Aircraft was a triangle shape and way to big to be anything from earth. At least that I've ever seen. I was able to make out the shape of the spacecraft from the lights but it appeared to have some type of cloak technology on it.