From Lyon, head towards the Alps. For cross 2 options available to you: to cross a pass, or a tunnel.
If you are in a hurry, choose the tunnel option, but I do not advise you because it does not win so long as AC and it is more expensive … But if you really go for the highway all along, prefer the Mont Blanc tunnel to that of Frejus, not only you will be better situated for the great Italian lakes but in addition you will enjoy the incredible spectacle of the Chamonix valley which one never tires. From the road, admire the Bossons glacier that seems to throw on the road then the Aiguille du Midi (leaning his head a little …). You have 2 minutes? Do not miss a beer tasting at the micro-brewery in Chamonix, MBC, at the intersection in front of ENSA.
If you prefer to take your time and play the card of the economy, choose the Tarentaise Valley to Bourg Saint Maurice. Coming out of the tunnel Siaix you will find that the valley opens again with magnificent views. If the narrow mountain roads do not scare you, head of Côte d’Aime Aime when you switch to and follow the road mountainside file on the “Slope of the sun.” Faced with the resorts of Les Arcs and La Plagne, this small balcony road offers magnificent views (which to make a picnic break) and passes through pretty villages ignored tourists …
Then back down to Bourg Saint Maurice and if you feel like, go to the bar Bazoom (inevitable), the Cooperative (next to the tourist office) selling cheeses and sausages from the Unbeatable Valley (go without Feel free to Beaufort Summer), then Labo (board shop), do a “check” Polo!
Then, towards Tignes, then Seez, turn to the Rosiere to cross the border at the Col du Petit Saint Bernard. Italian side is the tile (caution the road down the Italian side is narrow and very winding … but the scenery worth visiting). Tile is constantly swept by the cool winds that descend from the glacier Ruitor that can be seen in the valley. That’s it, you are in Italy, you have the pasta, espresso and “ciao”.