Offside rear of Plaxton Paramount coach, showing the "Continental Door" which allows safe and convenient boarding and alighting in a foreign country having the opposite "rule of the road" from the vehicle's home country.
<a href="//commons.wikimedia.org/wiki/User:Quackdave" title="User:Quackdave">Dave Root</a>
<span class="int-own-work" lang="en">Own work</span>