The term amphibious vehicle is identified in base64 scheme by the sequence YW1waGliaW91cyB2ZWhpY2xl, while the MD5 signature is equal to 4aef7caa3330a722f4ef1eef702d92d4. The ASCII encoding of amphibious vehicle in hexadecimal notation is 616d70686962696f75732076656869636c65.