Stevenson flees with the key – and Amy as insurance – to attempt a permanent escape in the time machine. Using Amy's car, Herbert follows them back to the museum. While Herbert bargains for Amy's life, she is able to escape. As Stevenson starts up the time machine, Herbert removes the "vaporizing equalizer" from it, causing Stevenson to vanish while the machine does not. As Herbert had explained earlier, this causes the machine to remain in place while its passenger is sent traveling endlessly through time with no way to stop; in effect, he is destroyed.