blue jays mimicking bus stopping?

I went crazy over trying to identify the bird that makes this unique two note whistle sound. i've only found 1 video of a bluejay making a sound similar enough to really put two and two together. i heard it outside this morning and realized you all are probably right. then, i go inside and hear a bus stop near my house. it makes almost the exact noise. Since ive only heard this call locally and never when traveling, i wonder if my neighborhood blue jays are mimicking their favorite sound of when trucks and buses stop?