Count length of array and return 1 if it only contains one element

Question

$cars = \"bmw\",\"audi\",\"volvo\",\"vw\"
echo $cars.length

returns 4, but

$cars = \"bmw\"

returns 3 because it

Answer 1

declare you array as:

$car = array("bmw")

EDIT

now with powershell syntax:)

$car = [array]"bmw"