Crocheted Car Applique

I was thinking what could i sew for my nephew's sweater, and I did a colored car, i like them so much.

Notations:
ch-chain stitch
sc-single crochet
sl st-slip stitch
st(s)- stitch(es)
trtr - triple treble crochet 

Firstly, I will tell how to crochet triple treble crochet ( i hope u will not have problems with another sts) : Yarn over hook 4 times, insert hook in st yarn over, draw loop through ,(yarn over, draw through 2 loops on your hook) 5 time till you have 1 loop on the hook.

Car : 

Row 1: Ch 18
Row 2: sc in 2nd ch from hook and in each ch across, turn
Row 3: ch3, dc in each ch across, ch1,turn
Row 4-5: repeat row 2-3
Row 6: ch10, trtr into 6th ch, trtr into 7th ch, ch9, sl st into 11th ch, finish row with sc, don't fasten off.

Sc in each st around whole car.

Wheel: 

ch 5, sl st, ch3, 9 dc, sl st.

Sew on the wheels. Honk on and Enjoy with your Car!!!