How do I make hovering over one DIV activate an animation on another DIV

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CSS3

HTML5

I have a background image and another image positioned on top of it, which is supposed to move to the right when I hover over the background image. Here is the code I have so far:
HTML

<div class="delivery_background"><div class="delivery_car"></div></div>

.delivery_background {
	background: url(../images/icons/delivery_animation.png);
	width: 1082px;
	height: 172px;
	margin-left: auto;
	margin-right: auto;
	border-radius: 5px;
	margin-bottom: 15px;
}

.delivery_car {
	position: relative;
	background: url(../images/icons/delivery_car.png);
	left: 10px;
	top: 75px;
	width: 120px;
	height: 80px;
	transition: left 10s ease;
}

.delivery_car:hover {
	position: relative;
	background: url(../images/icons/delivery_car.png);
	left: 750px;
	top: 75px;
	width: 120px;
	height: 80px;
	transition: left 3s ease;
}

I want the car to move when the background div is hovered over. Thanks!
So far the car moves only when you hover over it.

Here is a live example: EXAMPLE