Return sum of adjacent matching cells

Not sure if my title makes sense. I want a function that will take a key word(s), and sum the values next to them.
For example if I entered Car into the function I would get 5 returned, truck, 7, bike, 9.

Car	1
Truck	2
Bike	3
Car	4
Truck	5
Bike	6

I hope that is clear.

Thanks

Thanks Tony, way to easy

4+1 = 5

Should the sumif function add all cells in the range? I just get the first cell.

For example

Formula:

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Returns 5 (Cell B1 + B4), not 22 (Cell, B1 + C1 + B4 + C4)
I can do a work around, but it's not very elegant.

Thanks again

	A	B	C
1	Car	1	7
2	Truck	2	8
3	Bike	3	9
4	Car	4	10
5	Truck	5	11
6	Bike	6	12