Try adding this at the end of your program.
my @vehicles;
foreach (@{$data->{Vehicles}->{Vehicle}}) {
my %vehicle;
$vehicle{vin}=$_->{vin};
foreach(@{$_->{VehicleAttributes}->{VehicleAttribute}}) {
$vehicle{$_->{type}}=$_->{value};
}
push(@vehicles,\%vehicle);
}
print Dumper(\@vehicles);
Updated: corrected several errors, now it works. You have to replace the initialization of $xml with
my $xml = new XML::Simple( ForceArray => ["Vehicle"]);
to force the "Vehicle" tag in your XML to became an array in the generated tree.
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